Because you like Alex Blake in Criminal Minds

In Ziva David's world, you grow up fast; you don't have a choice. See them in NCIS.

Benoit Blanc is Sherlock with Southern charm, and a mysterious benefactor. See them in Knives Out.

Though she can seamlessly flit between glamorous identities, Sydney Prosser is more vulnerable than she pretends to be. See them in American Hustle.

It's impossible to say whether Winifred Burkle is cuter than she is smart, or vice versa. See them in Angel.

You wouldn't know it by looking at her, but beneath Sheila Jackson's sweet, motherly exterior lies a sex addict. See them in Shameless.

Mark Sloan is the best plastic surgeon and biggest playboy the hospital's ever seen. See them in Grey's Anatomy.

Greg Hirsch is new to the Roy family's cutthroat world of wealth and privilege. See them in Succession.

Twisted and seemingly soulless, Bellatrix Lestrange finds joy in making others suffer. See them in Harry Potter Series.

Just because he rules Hades, doesn't mean he can't be fun! See them in Hercules.

Rose Tyler may have not done too well in school, but she's certainly holding her own in space. See them in Doctor Who.

Irene Adler has to use both her brains and her body to survive. Luckily, she's usually the most brilliant person in the room. See them in Sherlock.

Selfishly taking her father’s place to fight in the Imperial Army, Hua Mulan risks treason if they find out she isn’t who she says she is. See them in Mulan.